MAGNETIC INFLUENCE ON STAR FORMATION AND X-RAY ACTIVITY

ABSTRACT

We propose to observe Lupus cloud I and II with ASCA. This star forming region contains one of the largest T associations of the southern sky. However, no massive OB pre-main-sequence stars, are found in it. The relative amount of stars with masses below below 0.5 Mo is much higher in Lupus than in any other T association. The unusual mass spectrum of the Lupus T Tauri stars suggests the initial mass function in Lupus differs from those in other clouds. A possible explanation might be the star formation process in Lupus is controlled by magnetic forces. If so, the magnetic forces must give influence on X-ray activity of stars in it.